Right now, on Calibre 8.55, I have a plug in that allows me to set a default font for epubs that Calibre converts for my Nook Glow. Right now, it works fine, but when I need a feature that is a part of the updated Calibre, I have to shuffle books between computers in order to use two different versions of Calibre - one to use the updated features of the latest calibre and one to do the conversion so that I get the right font...

While this isn't horrible, it is time consuming. Is there any way to get an updated plugin so that it works with the latest version? How can I set my books to automatically convert and have a default font? The font I use is Droid Serif if that helps!